Greatest Common Factor of 45, 30, 85, 17, 249

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 45, 30, 85, 17, 249 by common division method
• Greatest Common Factor of 45, 30, 85, 17, 249 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 85

List of positive integer factors of 85 that divides 85 without a remainder.

1,5,17,85

Factors of 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Factors of 249

List of positive integer factors of 249 that divides 249 without a remainder.

1,3,83,249

Greatest Common Factor

We found the factors 45,30,85,17,249 . The biggest common factor number is the GCF number.
So the greatest common factor 45,30,85,17,249 is 1.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 63, 45, 72, 54, 422
• GCF of 76, 10, 80, 11, 164
• GCF of 27, 83, 87, 77, 615
• GCF of 64, 96, 25, 17, 740
• GCF of 28, 23, 39, 66, 442

1. What is the GCF of 45, 30, 85, 17, 249?

Answer: GCF of 45, 30, 85, 17, 249 is 1.

2. How to Find the GCF of 45, 30, 85, 17, 249

Answer: Greatest Common Factor(GCF) of 45, 30, 85, 17, 249 = 1

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(45, 30, 85, 17, 249) = 1.